body{
    background-color: #ecf0f1;
}
.container{
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
}
a{
    margin-left: 10px;
    text-decoration: none;
    color: #fff;
    background-color: #34495e;
    display: inline-flex;
    width: 50px;
    height: 50px;
    justify-content: center;
    align-items: center;
    border-radius: 50%;
    transition: .6s;
}

a > span{
    font-size: 24px !important;
    transition: .4s;
}

a:hover{
    background-color: #f39c12;
}
a:hover > span{
    transform: scale(1.6) rotate(30deg);
}
